activity
20122026
most citedThe first measurement of the quasar lifetime distribution

51 citations · 365 across the 17 of their papers we have counts for

collaborators
Showing astro-ph.GAShow all

11 papers · 1 filter

astro-ph.GA2025★ 1 cited

Magnetic fields in galactic environments probed by Fast Radio Bursts

Ilya S. Khrykin, Nicolas Tejos, J. Xavier Prochaska +7

FRBs constitute a unique probe of various astrophysical and cosmological environments via their characteristic dispersion and rotation (RM) measures that encode information about t…

astro-ph.GA2025★ 10 cited

Empirical estimation of host galaxy dispersion measure towards well localized fast radio bursts

Lucas Bernales--Cortes, Nicolas Tejos, J. Xavier Prochaska +4

Fast radio bursts (FRBs) are very energetic pulses of unknown physical origin. These can be used to study the intergalactic medium (IGM) thanks to their dispersion measure (DM). Th…

astro-ph.GA2024★ 8 cited

FRB Line-of-sight Ionization Measurement From Lightcone AAOmega Mapping Survey: the First Data Release

Yuxin Huang, Sunil Simha, Ilya Khrykin +12

This paper presents the first public data release (DR1) of the FRB Line-of-sight Ionization Measurement From Lightcone AAOmega Mapping (FLIMFLAM) Survey, a wide field spectroscopic…

astro-ph.GA2024★ 37 cited

FLIMFLAM DR1: The First Constraints on the Cosmic Baryon Distribution from 8 FRB sightlines

Ilya S. Khrykin, Metin Ata, Khee-Gan Lee +15

The dispersion measure of fast radio bursts (FRBs), arising from the interactions of the pulses with free electrons along the propagation path, constitutes a unique probe of the co…

astro-ph.GA2023★ 27 cited

The Cosmic Baryon Partition between the IGM and CGM in the SIMBA Simulations

Ilya S. Khrykin, Daniele Sorini, Khee-Gan Lee +1

We use the Simba suite of cosmological hydrodynamical simulations to investigate the importance of various stellar and AGN feedback mechanisms in partitioning the cosmic baryons be…

astro-ph.GA2023★ 41 cited

The FRB20190520B Sightline Intersects Foreground Galaxy Clusters

Khee-Gan Lee, Ilya S. Khrykin, Sunil Simha +7

The repeating fast radio burst FRB20190520B is an anomaly of the FRB population thanks to its high dispersion measure (DMpc/cc) despite its low redshift of $z_\mathrm{frb}…

astro-ph.GA2023★ 4 cited

Searching for the sources of excess extragalactic dispersion of FRBs

Sunil Simha, Khee-Gan Lee, J. Xavier Prochaska +11

The FLIMFLAM survey is collecting spectroscopic data of field galaxies near fast radio burst (FRB) sightlines to constrain key parameters describing the distribution of matter in t…

astro-ph.GA2021★ 51 cited

The first measurement of the quasar lifetime distribution

Ilya S. Khrykin, Joseph F. Hennawi, Gabor Worseck +1

Understanding the growth of the supermassive black holes powering luminous quasars, their co-evolution with host galaxies, and impact on the surrounding intergalactic medium depend…

astro-ph.GA2021★ 23 cited

Dating individual quasars with the HeII proximity effect

Gábor Worseck, Ilya S. Khrykin, Joseph F. Hennawi +2

Constraints on the time-scales of quasar activity are key to understanding the formation and growth of supermassive black holes (SMBHs), quasar triggering mechanisms, and possible…

astro-ph.GA2018★ 38 cited

Evidence for Short Myr Lifetimes from the He II Proximity Zones of Quasars

Ilya S. Khrykin, Joseph F. Hennawi, Gabor Worseck

The duration of quasar accretion episodes is a key quantity for distinguishing between models for the formation and growth of supermassive black holes, the evolution of quasars, an…

astro-ph.GA2015★ 39 cited

He II Proximity Effect and the Lifetime of Quasars

I. S. Khrykin, J. F. Hennawi, M. McQuinn +1

The lifetime of quasars is fundamental for understanding the growth of supermassive black holes, and is an important ingredient in models of the reionization of the intergalactic m…